The sleep hour was already at 3am -> 4am (GMT00:00 = 2am -> 3am)
I verified my HTML and CSS codes ; (and took time to solve a display problem )
They are both perfectly clean (not minimised) except for one obsolete tag used 2 or 3 times in the HTML () ; I (as suggested by your code engine ^^) also removed a “*” selector which could slow down navigation.
Never the less, when my page appears, it takes its time (3-6 seconds) so maybe your servers are too weak or not enough to handle the growing amount of requests
Please consider not judging my English level. It’s not my native language (as suggests it my username)